I'm 16.
I have an allowance of 60 a month for spending and I choose to save almost all of it for more expensive gadgets. I sometimes sell my photos as well, that can put me up a few hundred every once and a while.
I also need a good computer for graphic design and photography classes I take. My parents usually help me out when buying a new computer (Macbook Pro in this case) which I need, and I pay for accessories (case, mouse, keyboard, Airport Express, display, speakers, extra RAM, etc.) that I want but aren't necessary. I put all my money into cameras and computers, I don't buy fancy clothes, go to a lot of movies, eat out with friends a lot...I choose to spend my money elsewhere, like many others here on MacRumors.